1021.] 



S, L. HORA : Fisli of Manipiir. 



179 



Macrones ' bleekeri, Day. 



l88g. Macrones bleekeri. Day. op. cii , p. 162. 



1880. Macrones bleekeri. V'incig'uerra, op. cit.. p. 219. 



The adipose fin of this species has a very great resemblance 

 to that of M . cavasins and M. leucoplmsis. The difference between 

 the three species may be expressed in a table a? follows ■ — 



M. cavasins ,H.B.). 



Maxilbiry barbels reacli 



the caudal fin. 

 A black spot at the base 



of the first dorsal 



spine. 



Depth of bodv 5' times 



in the total leiiijth. 

 No interneural bone. 



.)/. leiicophasis ( Blvth ). 



Maxillary barbels reach 

 the anal fin. 



The head and tore part 

 of the body bright sil- 

 very-white ; no black 

 spot at the base of the 

 first dorsal spine. 



Depth of btidy 4; times 

 in the total length. 



.•\n interneural bone pre- 

 sent. 



M. bleekeri. Dav. 



Ma.\illar\' barbels reach the 

 ,inal fin. 



Light longitudinal bands 

 along the body ; sometimes 

 with a black shoulder spot.. 

 In the Burmese examples a 

 black spot is also present at 

 the base of the caudal fin. 



Depth of body 53 times in 

 the total length. 



No interneural bone. 



The fish is very common all over the valley and is captured 

 in large numbers in traps, both in the streams and the lakes. 

 The specimens from the Loktak I^ake are darker in colour. 



Subgenus Macronoides, nov. 



This new subgenus is proposed for species which differ from 

 typical Macrones in the possession of a distinct ventral mouth 

 bordered by fringed lips ; in having short barbels not exceeding 

 the length of the head ; in the inandibular pairs of barbels being 

 disposed in a transverse row across the mandible and in the pos- 

 session of a number of open pores on the ventral surface of the 

 head just behind the mouth. In general facies the fish of this 

 subgenus show a remarkable resemblance to those of the genus 

 Gagata, from which, however, they are easily distinguished by the 

 crescentic band of teeth and a free air-bladder in the abdominal 

 cavity. 



I assign the following species to the new subgenus : — Macro- 

 nes affinis (Blyth),^ M. dayi Vinciguerra '^ and M. marianiemis 

 Chaudhuri.* I have examined the types of the first and the 

 third ; while Vinciguerra's description and figures of M. dayi leave 

 no doubt as to its afiinitv with the other two. 



Jordan, Pros. Acad. l^at. Sci. Phi/. l.X.X. p. ;;4i. considers Macrones a 

 synonym of Aoria; but in view of the familiarity of the n-Ame Macrones. I have 

 tetained it in this paper. 



■' Blyth, Jonrn. As. Soc. Bengal, .XXIX, p. 150 1 18O0). 



• N'mcigucrra, op. cit.. p. 230, pi. vii, fig. 3 fiSSgl. 



* Chaudhuri, Rec. Ind. Mii:,., \TI1, p. 25.^, pi. xi, figs. I, \a. b (1913). 



